Nancy Krausnick's Profile

This here is a virus-infected plant. The effect of the virus is on the leaves
and also the fruit. On the leaves- the leaves, instead of being full, are
narrow, and they also show this yellowing here, as opposed to the genetically
engineered papaya here. This leaf is a normal-looking papaya leaf. It's fully
green, and the growth is very good. Now, the only difference here is that this
one plant has the one gene making it resistant to the virus.

decline in lactase production as people grow older

Northern Europeans generally have the lowest frequency of this dietary
problem.